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Anthony English is an independent contractor who solves expensive problems for businesses running IBM Power Systems.
He has written extensively about AIX and has been recognised for his contributions and thought leadership by being named an IBM Champion for Power Systems.

In this case, the paging00 belongs to the volume group pagingvg. The PP SIZE for that volume group is 256 megabytes. When you're changing a file system size, on the other hand, you don't need to know what volume group the logical volume belongs to.

Now to increase the paging space paging00 by, say, 2 GB, you'd need to calculate that in multiples of 256 mb, which comes to 8 Logical Partitions (LPs).

So to increase paging00 by 2 GB, you would run:

chps -s 8 paging00

Wouldn't it be nice to be able to specify the size in GB or MB, the way you can with a file system? Wouldn't this syntax be easier:

chps -a size=+2G paging00

you could leave AIX to work out how many logical partitions that comes to, just the way it works for file systems.